*{
	margin:0px;
	padding:0px;}
body{
	font-family:Arial, Helvetica, sans-serif;
	font-size:12px;}
#banner{
	width:100%;
	height:100px;
	background-color:#000;}
#menu{
	width:12%;
	height:400px;
	background-color:#D5D5D5;
	margin-top:6px;
	margin-left:4px;
	margin-bottom:6px;
	float:left;}
#content{
	margin-top:6px;
	margin-bottom:6px;
	float:right;
	width:87%;
	height:auto;
	background-color:#BFBFBF;}
#footer{
	width:100%;
	height:100px;
	background-color:#D6D6D6;}
.clean{
	clear:both;}
#box_chuc_nang{
	width:auto;
	height:40px;
	text-align:center;
	padding:10px;}
#box_chuc_nang:hover{
	border:1px solid #B7B7B7;}
#menu a{
	text-decoration:none;
	color:#000;}
.left{
	margin-top:40px;
	width:300px;
	float:left;}
.right{
	margin-top:40px;
	width:400px;
	float:right;
	margin-right:60px;}
.left{
	margin-left:10px;}